Auxiliary power supply module and dual-power supply system
By using planar transformers and vertical layout in the dual-power supply system, the problem of large area occupied by auxiliary power modules is solved, and the system is miniaturized.
Patent Information
- Application Number
- CN202422670336.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The auxiliary power modules of the existing dual-power supply system occupy a large area of printed circuit boards, making it difficult for the system to miniaturize.
The two electrical isolation modules are arranged on the same printed circuit board, share part of the area, and use planar transformers and vertical layout to optimize the space utilization of the printed circuit board.
The space utilization rate of printed circuit boards is improved, and the size of auxiliary power modules and dual power supply systems is miniaturized.
Smart Images
Figure CN223261709U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of electrical technology, and specifically relates to an auxiliary power supply module and a dual power supply system. Background Art
[0002] A dual-power supply system is a power supply that automatically switches between two input power sources. Its operating principle is that when both inputs are normal, an automatic transfer switch selects one input for power supply. If that input fails, the automatic transfer switch switches to the other input. This power supply architecture provides redundant input power. In addition to an automatic transfer switch to implement circuit switching, this dual-power supply system also requires an auxiliary power supply module to provide power to the automatic transfer switch and other components in the system.
[0003] In related technologies, the auxiliary power supply module of a dual-power supply system needs to generate an output when any input power supply exists. It generally includes two auxiliary power supplies. The two auxiliary power supply modules are respectively arranged on a printed circuit board, and the two auxiliary power supply modules need to meet certain insulation requirements. An isolation module needs to be set up or the two auxiliary power supplies need to be separated by a long distance, resulting in the auxiliary power supply module occupying a large area of the printed circuit board, which is not conducive to the miniaturization of the dual-power supply system. Utility Model Content
[0004] In view of this, the present application provides an auxiliary power supply module and a dual power supply system to improve the problem that the auxiliary power supply module occupies a large area of the printed circuit board.
[0005] The technical solutions adopted by this application to solve the above technical problems are:
[0006] In a first aspect, the present application provides an auxiliary power supply module, comprising:
[0007] A printed circuit board, comprising a first area, a second area, and a third area sequentially arranged along a first direction;
[0008] A first electrical isolation module and a second electrical isolation module are both provided on the printed circuit board;
[0009] Part of the first electrical isolation module is arranged in the first area, and another part is arranged in the second area; part of the second electrical isolation module is arranged in the third area, and another part is arranged in the second area.
[0010] In some embodiments of the present application, the first electrical isolation module includes an electrically connected first input line, a first transformer, and a first output line, and the first input line and the first transformer are both located in the first area; the second electrical isolation module includes an electrically connected second input line, a second transformer, and a second output line, and the second input line and the second transformer are both located in the third area;
[0011] The first output line and the second output line are both arranged in the second area.
[0012] In some embodiments of the present application, the first area includes a first sub-area and a second sub-area, the first sub-area and the second sub-area are arranged sequentially along the second direction, the first transformer is arranged in the first sub-area, and the first input line is arranged in the second sub-area;
[0013] The third region includes a third sub-region and a fourth sub-region, the third sub-region and the fourth sub-region are arranged in sequence along the second direction, the second transformer is arranged in the third sub-region, the second input line is arranged in the fourth sub-region, and the first direction is perpendicular to the second direction.
[0014] In some embodiments of the present application, the first region and the second region have the same area.
[0015] In some embodiments of the present application, the first sub-region and the second sub-region have the same area, and the third sub-region and the fourth sub-region have the same area.
[0016] In some embodiments of the present application, both the first transformer and the second transformer are planar transformers.
[0017] In some embodiments of the present application, the auxiliary power supply module further includes a first input pin, a second input pin, and an output pin, wherein the first input pin is arranged on the printed circuit board and electrically connected to the first input line, the second input pin is arranged on the printed circuit board and electrically connected to the second input line, and the output pin is arranged on the printed circuit board and electrically connected to both the first output line and the second output line.
[0018] In some embodiments of the present application, the first input pin is located on a side of the second sub-region away from the first sub-region, the second input pin is located on a side of the fourth sub-region away from the third sub-region, the output pin is located on a side of the third region, and the first input pin, the second input pin and the output pin are located on the same side of the third region.
[0019] In some embodiments of the present application, the output pin includes a first output sub-pin and a second output sub-pin, the first output line is electrically connected to the first output sub-pin, and the second output line is electrically connected to the second output sub-pin.
[0020] In a second aspect, an embodiment of the present application provides a dual power supply system, including:
[0021] The auxiliary power supply module as described in the first aspect;
[0022] An automatic switching switch module, one end of which is electrically connected to the auxiliary power supply module, and the other end of which is connected to the load.
[0023] In summary, due to the adoption of the above technical solution, this application has at least the following beneficial effects:
[0024] The present application provides an auxiliary power supply module and a dual power supply system. The auxiliary power supply module improves the space utilization of the printed circuit board by arranging two electrical isolation modules on the same printed circuit board, and the two electrical isolation modules share a second area, which is beneficial to reducing the volume of the auxiliary power supply module and further facilitating the miniaturization of the dual power supply system. Specifically, the area of the printed circuit board used to arrange the auxiliary power supply module is first divided into a first area, a second area, and a third area, and the first area, the second area, and the third area are arranged in sequence along a first direction, that is, the second area is located between the first area and the third area; then, a portion of the first electrical isolation module is arranged in the first area, a portion of the second electrical isolation module is arranged in the third area, and another portion of the first electrical isolation module and another portion of the second electrical isolation module share the second area, thereby reducing the original four areas required to accommodate the two electrical isolation modules to only three areas required to accommodate the two electrical isolation modules, thereby improving the space utilization of the three areas and further miniaturizing the volume of the auxiliary power supply module and the dual power supply system. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the layout of an auxiliary power supply module provided in an embodiment of the present application;
[0026] Figure 2 This is a schematic diagram of the principle of an auxiliary power supply module provided in an embodiment of the present application;
[0027] Figure 3 This is a circuit diagram of a flyback isolation topology circuit exemplified in an embodiment of the present application;
[0028] Figure 4 This is a circuit diagram of an auxiliary power supply module using a flyback isolation topology circuit as an example in an embodiment of the present application;
[0029] Figure 5 A schematic diagram of a dual power supply system provided in an embodiment of the present application.
[0030] Description of reference numerals:
[0031] 100, auxiliary power module; 110, printed circuit board; 111, first area; 1111, first sub-area; 1112, second sub-area; 112, second area; 1121, third sub-area; 1122, fourth sub-area; 113, third area;
[0032] 200. Automatic switching switch module. DETAILED DESCRIPTION
[0033] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.
[0034] In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
[0035] See Figure 1 and Figure 2 An embodiment of the present application provides an auxiliary power supply module 100, comprising a printed circuit board 110, a first electrical isolation module, and a second electrical isolation module. The printed circuit board 110 includes a first region 111, a second region 112, and a third region 113, arranged sequentially along a first direction. The first electrical isolation module and the second electrical isolation module are both disposed on the printed circuit board 110.
[0036] Part of the first electrical isolation module is disposed in the first area 111 , and another part is disposed in the second area 112 ; part of the second electrical isolation module is disposed in the third area 113 , and another part is disposed in the second area 112 .
[0037] The technical solution provided by the present application improves the space utilization of the printed circuit board 110 by placing two electrical isolation modules on the same printed circuit board 110, and the two electrical isolation modules share the second area 112, thereby improving the space utilization of the printed circuit board 110, reducing the volume of the auxiliary power supply module 100, and further miniaturizing the dual power supply system. Specifically, the area of the printed circuit board 110 for arranging the auxiliary power supply module is first divided into a first area 111, a second area 112, and a third area 113. The first area 111, the second area 112, and the third area 113 are arranged in sequence along a first direction, that is, the second area 112 is located between the first area 111 and the third area 113. Then, a portion of the first electrical isolation module is respectively arranged in the first area 111, and a portion of the second electrical isolation module is arranged in the third area 113. Another portion of the first electrical isolation module and another portion of the second electrical isolation module share the second area 112. This reduces the original four areas required to accommodate the two electrical isolation modules to only three areas required to accommodate the two electrical isolation modules, thereby improving the space utilization of the three areas and further miniaturizing the volume of the auxiliary power supply module 100 and the dual power supply system.
[0038] In some embodiments, see Figure 1 and Figure 2 The first electrical isolation module includes an electrically connected first input circuit, a first transformer, and a first output circuit. The first input circuit and the first transformer are both located in a first area 111, maximizing the space in first area 111 and preventing excessive waste. The second electrical isolation module includes an electrically connected second input circuit, a second transformer, and a second output circuit. The second output circuit and the second transformer are both located in a third area 113, maximizing the space in third area 113 and preventing excessive waste.
[0039] The first and second output lines are both located in second area 112, allowing them to share space in second area 112, maximizing the use of space in second area 112 and improving the efficiency of second area 112. Furthermore, the use of a transformer effectively achieves electrical isolation, preventing interference between the input and output lines. Furthermore, by locating the output line between the two input lines, the two input lines are further physically isolated.
[0040] Furthermore, first region 111 includes a first sub-region 1111 and a second sub-region 1112. First sub-region 1111 and second sub-region 1112 are arranged sequentially along the second direction, with the first transformer located in first sub-region 1111 and the first input line located in second sub-region 1112. Similarly, third region 113 includes a third sub-region 1121 and a fourth sub-region 1122. Third sub-region 1121 and fourth sub-region 1122 are arranged sequentially along the second direction, with the second transformer located in third sub-region 1121 and the second input line located in fourth sub-region 1122. The first direction and the second direction are perpendicular, so that the first area 111 and the second area 112 can be further divided into two sub-areas in the second direction perpendicular to the first direction, and the corresponding input lines and transformers are arranged in the corresponding sub-areas, so that the input lines and the transformers do not occupy too much space of the printed circuit board 110 in the first direction in the first area 111 and the third area 113, but fully utilize the space of the first area 111 and the third area 113 in the second direction, effectively avoiding space waste in the first area 111 and the third area 113 in the second direction.
[0041] Furthermore, the first region 111 and the third region 113 have equal widths in the second direction, and the sum of the widths of the first sub-region 1111 and the second sub-region 1112 in the second direction is equal to the width of the second region 112 in the second direction. This arrangement ensures that the first region 111, the second region 112, and the third region 113 have equal widths in the second direction and are arranged flush, which effectively utilizes the space in the second direction among the three regions. In this embodiment, the first region 111 and the second region 112 have equal areas.
[0042] Furthermore, the first direction is perpendicular to the second direction, and the first region 111, the second region 112, and the third region 113 together form a rectangle, which facilitates the division of the three regions and the arrangement of the transformer, output circuits, and input circuits. Furthermore, the first direction is perpendicular to the second direction, making it easier to control the area of the three regions compared to when the first and second directions intersect at other angles, and also minimizing the total area of the three regions.
[0043] In some embodiments, the first sub-region 1111 and the second sub-region 1112 have equal areas, and the third sub-region 1121 and the fourth sub-region 1122 have equal areas, which is conducive to the division of each area and more convenient for the arrangement of the transformer, output line and input line.
[0044] In some embodiments, the first transformer and the second transformer are both planar transformers. The windings of the planar transformer are placed on the printed circuit board of the auxiliary power module, using printed circuit board routing, and the magnetic core is buckled on the printed circuit board. In detail, the planar transformer refers to a transformer directly integrated on the circuit board. The windings of the transformer use the copper foil layer on the circuit board instead of the enameled wire of the traditional transformer. The primary and secondary windings of the transformer are formed by stacking multiple circuit boards, and the magnetic core of the transformer is embedded or bonded to the circuit board. Compared with traditional transformers, planar transformers are smaller in size, and their planar structure has better heat dissipation performance, which is conducive to the miniaturization of the auxiliary power module 100. By using planar transformers for the first transformer and the second transformer, it is beneficial for the first transformer to be located in the first sub-area 1111 and the second transformer to be located in the third sub-area 1121, avoiding the situation where the transformer cannot be located in the sub-area due to its large size.
[0045] In some embodiments, see Figure 1 and Figure 2 , the auxiliary power supply module 100 also includes a first input pin, a second input pin and an output pin. The first input pin is provided on the printed circuit board 110 and is electrically connected to the first input circuit, for inputting external power into the first input circuit. The second input pin is provided on the printed circuit board 110 and is electrically connected to the second input circuit, for inputting external power into the second input circuit. The output pin is provided on the printed circuit board 110 and is electrically connected to both the first output circuit and the second output circuit, for outputting power through the output pin. The output pin here is electrically connected to both output circuits, which includes two situations. The first situation is that the first output circuit and the second output circuit are merged into a total output circuit by using a diode, and the total output circuit is electrically connected to the output pin; the second situation is that the first output circuit is connected to the output pin, and the second output circuit is connected to the output pin, and the first output circuit and the second output circuit are independent circuits and are not merged. In this embodiment, the second method is adopted, as follows:
[0046] The output pins include a first output sub-pin and a second output sub-pin. The first output circuit is electrically connected to the first output sub-pin, and the second output circuit is electrically connected to the second output sub-pin. This arrangement can avoid the situation in which, in the first scenario, a failure of the main output circuit causes the auxiliary power supply module 100 to be unable to output power.
[0047] In some embodiments, the first input pin is located on one side of the second sub-region 1112. Because the first input circuit is located in the second sub-region 1112, the first input pin can be placed as close to the first input circuit as possible, reducing the area required for wiring. The second input pin is located on one side of the fourth sub-region 1122. Similarly, the second input pin can be placed as close to the second input circuit as possible, reducing the area required for wiring. Similarly, the output pin is located on one side of the third region 113, placing the output pin as close to the output circuit as possible, reducing the area required for wiring. Furthermore, the first input pin, the second input pin, and the output pin are located on the same side of the third region 113. This indicates that the first input pin, the second input pin, and the output pin are all located on the side of the second sub-region 1112 facing away from the first sub-region 1111 in the second direction. This prevents the first input pin, the second input pin, and the output pin from being located on different sides, thereby increasing the area occupied by the auxiliary power supply module 100 on the printed circuit board 110.
[0048] In some embodiments, the auxiliary power supply module 100 can be a flyback isolation topology circuit, a forward isolation topology circuit, a half-bridge circuit, a full-bridge circuit, a push-pull circuit, etc. In this embodiment, a flyback isolation topology circuit is used as an example as follows:
[0049] See Figure 3 The auxiliary power supply module 100 includes an input capacitor C in, a primary switch tube Q, a primary controller CL, an output rectifier circuit RC, an output capacitor C out, and a transformer T. The input capacitor C in, the primary switch tube Q, and the primary controller CL belong to the input circuit part, while the output rectifier circuit RC and the output capacitor C out belong to the output circuit part. For specific connection relationships, see Figure 3 .
[0050] See Figure 4 The auxiliary power module includes two lines, which are combined into one output through a diode. One line is the first input line, the first transformer and the first output line, and the other line is the second input line, the second transformer and the second output line. The two lines have the same structure, that is, they both include input capacitor Cin, primary switch tube Q, primary controller CL, output rectifier line RC, output capacitor Cout, and transformer T. For specific connection relationships, please see Figure 4 .
[0051] See Figure 5Embodiments of the present application also provide a dual power supply system, comprising an auxiliary power module 100, an automatic switching switch module 200, and a control circuit for the automatic switching switch module 200, as described in any of the aforementioned embodiments. The input of the automatic switching switch module 200 is connected to the input of the auxiliary power module 100, and the output of the auxiliary power module 100 supplies power to the control circuit of the automatic switching switch module 200. The output of the automatic switching switch module 200 is connected to a subsequent converter. Specifically, one end of the automatic switching switch module 200 is electrically connected to the auxiliary power module 100, and the other end is connected to the subsequent converter. The automatic switching switch module 200 has two circuits, one of which is electrically connected to the first output circuit of the auxiliary power module 100 at one end and to the subsequent converter at the other end; the other circuit is electrically connected to the second output circuit of the auxiliary power module 100 at one end and to the subsequent converter at the other end. By controlling a switch in the automatic switching switch module 200, one of the two circuits is turned on. Because the dual power supply system is provided with the auxiliary power supply module 100 , it also has the corresponding structure and beneficial effects of the auxiliary power supply module 100 , which will not be described in detail here.
[0052] This application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic associated with at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.
[0053] Similarly, it should be noted that, in order to simplify the description of this application and thus facilitate understanding of one or more embodiments of the application, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than all the features of the individual embodiments disclosed above.
Claims
1. An auxiliary power supply module, characterized in that: include: A printed circuit board, comprising a first area, a second area, and a third area sequentially arranged along a first direction; A first electrical isolation module and a second electrical isolation module are both provided on the printed circuit board; Part of the first electrical isolation module is arranged in the first area, and another part is arranged in the second area; part of the second electrical isolation module is arranged in the third area, and another part is arranged in the second area.
2. The auxiliary power supply module according to claim 1, characterized in that: The first electrical isolation module includes an electrically connected first input line, a first transformer, and a first output line, wherein the first input line and the first transformer are both located in the first area; the second electrical isolation module includes an electrically connected second input line, a second transformer, and a second output line, wherein the second input line and the second transformer are both located in the third area; The first output line and the second output line are both arranged in the second area.
3. The auxiliary power supply module according to claim 2, characterized in that: The first area includes a first sub-area and a second sub-area, the first sub-area and the second sub-area are arranged in sequence along the second direction, the first transformer is arranged in the first sub-area, and the first input line is arranged in the second sub-area; The third region includes a third sub-region and a fourth sub-region, the third sub-region and the fourth sub-region are arranged in sequence along the second direction, the second transformer is arranged in the third sub-region, the second input line is arranged in the fourth sub-region, and the first direction is perpendicular to the second direction.
4. The auxiliary power supply module according to claim 3, characterized in that: The first region and the second region have the same area.
5. The auxiliary power supply module according to claim 3, characterized in that: The first sub-region and the second sub-region have the same area, and the third sub-region and the fourth sub-region have the same area.
6. The auxiliary power supply module according to any one of claims 2 to 5, characterized in that: The first transformer and the second transformer are both planar transformers.
7. The auxiliary power supply module according to claim 3, characterized in that: The auxiliary power supply module also includes a first input pin, a second input pin and an output pin. The first input pin is arranged on the printed circuit board and is electrically connected to the first input line. The second input pin is arranged on the printed circuit board and is electrically connected to the second input line. The output pin is arranged on the printed circuit board and is electrically connected to both the first output line and the second output line.
8. The auxiliary power supply module according to claim 7, characterized in that: The first input pin is arranged on a side of the second sub-region away from the first sub-region, the second input pin is arranged on a side of the fourth sub-region away from the third sub-region, the output pin is arranged on a side of the third region, and the first input pin, the second input pin and the output pin are located on the same side of the third region.
9. The auxiliary power supply module according to claim 7, characterized in that: The output pin includes a first output sub-pin and a second output sub-pin, the first output line is electrically connected to the first output sub-pin, and the second output line is electrically connected to the second output sub-pin.
10. A dual power supply system, characterized in that: include: The auxiliary power supply module according to any one of claims 1 to 9; An automatic switching switch module, one end of which is electrically connected to the auxiliary power supply module, and the other end of which is connected to the subsequent converter.